Chair



June 22 1926. 1,589,847

O. H. HANSEN CHAIR Filed'NOv. 15, 1920 INVENTE:

ATTI: -RN EY,

Patented .lune 22, 1926.

UNETED S'ltrt T QFFECE.

OSWALD H, HANSEN, 0F PORT XVASITHNGTON, VISCONSIN, ASS'GNOR TO GILSON NEAN- UFACTURING CC'MPANY, OF .PORT v/'ASHINGTON, VSCONSIN, A CORPORATION OF..

CHAIR.

Application filed November l5, 1920.

yl`his invention relates in general to improvements in the art ot manufacturing articles ot furniture, and relates more speciically to improvements in the constructnm and method ol? manipulating tiltahlc revolving chairs.

An object ot the invention is to provide a seat supportiine` structure 'l-or tiltable revolving' chairs and the like, which is simple in construction and etlicient in operation.

Some of the more specilic objects ot the invention may be summarized as itollowsi# To provide a seat support tor revolving chairs and the like, which is simple and rugged in construction but which will pre sent a neat and highly finished appearance.

To provide a chair supporting?,- structure which will enhance the comfort afforded by using the chair, and which will permit rapid and convenient adjustment ot the height of the seat and of the degree of etlort required to tilt the seat.

To provide a chair support which may be readily assembled and dismantled, and all parts ot which are reely accessible for inspection and for lubrication.

To provide a sub-structure for tiltable revolving' chairs, which may be manufactured at minimum cost and various elements ot which are interchangeable.

To provide an improved base structure iler revolving chairs and the like, in which the lepgs are rigidly connectible to and readily reinovable from the hub and central standard.

To provide other improvements in the details ot construction of so-called chair irons, which will minimize the cost of manufacture and which will increase to a maximum the etliciency ot operation.

Several ot the novel 'features of chair base construction disclosed but not specihcally claimed herein, form the subject of a copendinp' application tor Letters Patent bearing' Serial Number 420,595, which was tiled on October 30, 1920.

@ther novel features ot chair base construction disclosed herein, 'form the subject ot copending application Serial Number 455,732 tiled lvlarch 26, 1921.

A clear conception ot embodiments of the several features o'll the present invention and o'l the operation o'l devices constructed in accordance therewith, may be had by referA Serial No. 424,015.

ring to the drawings acconipanying,` and forming a part ot this speciication, in which lilre reference characters designate the same or similar parts in the various views.

Fig. 1 is a traQjmentary part sectional side elevation ot a tiltable revolving; chair.

2 is a bottom view et the upper portion ot the chair support which is attached directly to and is rotatable with the seat.

rllhe tiltable revolving chair disclosed in Fig. 1 comprises in general a base, a vertical spindle or standard 4- having; its lower portion rigidly connected to the base, a bracket 5 'freely rotatably mounted upon an upper aortion of the standard Il, an invert-ed U- Shaped spreader 7 pivotally mounted upon the bracket 5, spider arms 3 rigidly secured to the upper' side portions of the spreader T, and a 'seat 2 attached to the Jfront and rear aortions of the spider arms 3.

The base ot the chair consists generally ol a plurality of legs 33 radiating' from the lower end of the standard d; a top plate 2G having a central 'flange 3T snugly fitting and rigidly attached to the standard L1- by means or a locking` rivet 23; a bottom plate 27 having a central llangre 33 snugly litting the lower extremity of the standard l; and ller blocks 32 located in the corners formed by the coactingg` lep; ends. rlfhe top plate 2G is provided with a downwardly extending continuous peripheral tlanpge 34 which lits within upper recesses in the legs 33 and alec coacts with the upper outer corners of the filler blocks 32. rlie bottoni plate 27 is provided with an upwardly extending' continuous peripheral lange 35 which lits within lower recesses in the legs 33 and also coacts with the lower outer corners oli the filler blocks 32. A cap 29 is fitted over the lower extremity of the standard 4; and engages the flange 38 ot the bottom plate 27. A screw 31 associated with the end of the standard l engages a washer 30 which coacts directly with the cap 29. lith this assemblage of elements, the screw 31 may be urged upwardly to cause the cap 29 to t'orce the bottom plate 2T toward the lixed top plat@ 2G, thus rigidly uniting the base elements.

The central spindle or standard l which has its lower extremity rigidly united with the base, has its upper portion screw threaded and provided with a longitudinal recess 21 in one side thereof, see Figs. 1 and 2. An

adjusting hand mit llias a central bore provided with screw threade coactiiig with the threads ou the standard l. The upper central portion of Vthe nut 14e is provided with an. amulzir receeisl within vvliieli ball bearings .l5 ii'iav be located. vfithiii a transverse bore ol the mit lll is mounted a locking' pin l? the inner end ol which is adapted to engage the rec Ql oiI the s'aiiflard 4 to lock the mit einst movement relative to the standard. The piu l? is urged toward the recess 2l by iii'eaiis of a. helical compression spring; l) one end oi which rea its against :m iiiii'er oit the mit le and the opposite end el, which engages a transverse pin which penetrates the locking' pin l?. A lateral lug' ll on d o pin 17 is adaj'ited to hold this piii out of the recess 2l, When the pin l? has i'feen vitlidrawii and given a quarter tiivii.

The main lgiiaclet 5 which is fr abljv moimted iigoii the epici' Y the standard Al, has aii elongated i I ,c bored to receive the stand ard Il and provi ded et its levier extremity with a.. flange vvl'iich rests upon the ball beai'ingey 'The mit 14 is provided with one or more upper iiiv'ardlv projecting' lugs l5 which extend over Sal the lower bracket flange and prevent axial separation of the mit lil and bra lie 5, The

bracket 5 has a 'forwardly projecdng arm 6 'lie lovver rear portion oi which is provided With a pair of' sjoaced depending ears or lugs 36, and the foremost Lipper extremity of which is bored to support a. spring' adjusting bolt l0. The ripper extrcii'iity of the hub of the bracket 5 is provided With an aletment surface or stop 23, while the lovver portion o'l the bracket arm G is provided With a pair of opposed lugs Q5 which also forli abutments or stops.

The inverted U-sliaped spreader 7 is preferably foi'iiied of sheet metal :ind has ils loweriiiost side portiods pivoliallv coi'iiiecled to the bracket lugs 533' bv means ot a horizontal pivot pin l which mai; be riveted to the spreader. The spreader 'i iis' oscillator;7 about the pivot piu ,2% and transversely o? the standard and lee` aio upper ahulniieiit or stoiii 22 eiirraeieeble with the. bracket stop to limit tliegxea rivard eivi olf the si'irev-.d-A er] and lower il i ntsiiri l or etopslll: ei'igageahle with i Ae liraclletstops toliiiiit the forward saving' of the. sores: er The l l e'aiiist .fl spreader 'i ,is urged forward ae the brachel stops by 'means ot a pa' olj coiled leiision spring; 5L, the rear ende olz which en* a transveme rod or ein secured to the opposite side vralls ot' the spree `:er il and the forward ends ot' which hook over a spring 'vole f) carried bvtlie square 'headed end ol: the adjusting' bolt l0. ylilhe tension 'of the spring S may be. varied h v means of a hand mit ll cool. .ig with `the lihrezidfcd end of the bolt l0 and 'with the bracket arm (i.

medew yl/'lie spider arms il are iiiie'';

sheet metal and are i idlyY :allerhand to the upper side portions oll the spira@ 'i ,ifhc ends ciau' sont 2 is rigidliY secured to the During; the chai r,

the seat ieder i azul brochet 5 1 rev ivcd about' the l5. \`\"lh iic base through standard l `and mit' l/l. rllhe chair i3 may be Arilted iexiwvarrlinf; until t i ler stop engi i c "L the springs 8 b` i l tiltingn and th porting' pio l2 heiio lorroef" interfere with the stops alli spreader and bracket.

ll" it is desired to vary the he"V chair seat 2. this iiiajr be rc: l plished by releasing the loc 5i rotating the hand adju to the stationary standard 4. will then travel along' the staiiijlard l to t desired position or" adjustment, when it i be again loc l to the standard bv rele the locking pin l? and allowing' the e this pin to snap into the recess is desired to vary the C quired to tilt the chair readil)7 accou'iplislied b Wheel ll relatively to either increasiirxg` or deci; ie tension of the springs 5l, as desire?. l will he noted ll at these adjustments may be qiiif'lfly madin and that all parts ol the iixcithziiiisiii are readily.v accessible iior inspection :ind hibrication.

The liiib sl'ii'ucliirc provides elli ieiil iiieai lor rig/'idly fcciiri if; 33 lo the standard lai d positively Wear and rcfiill'iiilir looeciieos oi' i will lerd lo iiiodiirf vv olj 'the cl'ifiirr seet il. ,The i'ii'ie eieiae vided liv the peripheral dances: ."fN top :md bottom plaies E? iiositivclg' iure vent displacement olz llie legis l away 'f the standard 4, and the rivet "53 l screiivv Sl ae veli :is the lirici' ends of the legs 33 and the tiovel).7 prevent displacemeii" the standard. The hub may' lV semblec and dismantled b v merely ma, pulating the locking screw 3l, and the entire structure may be manille/lured at i'i'liiiiiiiiiiii cost.

lt should be understood that it is not de ol ihrl accoml'i' arid (l, therelw E l. ll

sired lb liniit the invention to the exact details oit construction and olf operation herein shown and described, for Various inoditications within tbe scope o'r the claims may occur to persons skilled in the art.

lt is clainied and desired to secure by Letters Patent:-d

l.. ln combination, a base, a standard. snpported by said base, a bracket element snpported by said standard, a spreader elenient piroted to said bracket eleinent in front oi' said standard, and a substantially horizontal spring connecting,v said elements, the outer end oit said spring* being connected to one or said elenicnts in l'ront oi' said standard and the inner end ol? said spring being connected to the other ot said elon'ients between said standard and said outer spring` end.

2. ln coniibination, a base, a standard stippoited by said base, a bracket oicnient siip ported by said standard, a spreader elenient pivoted to said bracket elenient iii iront oif said standard, and a substantially horizontal spring connecting` said elements, the outer end ot said spring bei" A connected to one ot said elc-nients in trent ot' said standard and the inner end oit said spring); being; connected 'to the other ot said eleinents directly above the spreader eleinent pivot.A

3. ln combination, a base, a standard snpported by said base, a bracket supported by said standard, a spreader pivoted to said bracket in iii-ont. ot said standard, and a coil spring,` connecting said bracket and said spreader, the outer end of said spring,` being' connected to said bracket in front ofi said standard and the inner end of said spring being connected to said spreader between said standard and said outer spring` end.

t. .in combination, i base, a standard snp ported by said base, a bracket supported by said standard, a spreader pivoted to said bracket in front oit said standard, and a spring connecting; said bracket and said. spreader, the enter end ot' said spring bein connected to said bracket in tro-nt oi said standard and the inner end oLt said spring being' connected to said sineader directly above tbe spreader pi vot.

5. .ln combination, a base, a standard rig idly attached to said base, a bracket element rotatably associated with said standard above said base, a spreader elenient horizon tally pivoted to said bracket eieinent in 'front oitl said standard, and substantially horizon tal coil spring connecting said elements, the outer end ot said spring being connected to one o'lf said elements in trontot said standd and the inner end oit iaid spring being ifu. connected to the other ot said elements bf tween said standard and said. outer spring` end.

ln combination, a base, a standard hay ii a. its lower end rigidly secured to said base, a bracket element rotatably associated with said standard above said base, a spreader elenient horizontally piyoted to said bracket element in ifront ot said standard, and a substantially horizontal coil spring connecting said elements, the enter end ot' said spring being connected to one of said eleinents in i'ront ot said standard and the inner end ot said spring' beingl connected to tbe otlier of said eleincnts directly above the sore-der element pivot.

d 'i'. l'n combination, a ase, a standard liaving its lower end rigidly secured to said base, a bracket having screw thread coaction with said standard above said base, a spreader horizontally pivoted to said bracket in vliront oit said sta-of rrd, and a substantially horizon- 'al coil springy coni'iecting said bracket and said spreader, tbe ontcicnd ot said spring fno* adjnstably connected to said bracket in ,ront of said standard and the inner end ot said springv being' pivotally iiiedly connccted to said spre" ir between said standard and said onter in 'iibiiigy ond and directly above the spreader pivot.

8. lin combination, a base, a standard liavu ing; its lower portion rigidly secured to said base, a bracket rotatably associated with said standard above said base, a spreader horizontally pivotally connected to said bracket in :ti-ont of saic standard, and a horizontal spring secured to said spreader directly above the spreader pivot and connected with a forward portion of said bracket.

9. ln combination, a base, a standard snpported by said base, a bracket element sapported by said standard, a spreader eleinent horizontally pivoted to said bracket eleinent in 'front ot said standard, and a transversely ininiovable coil spring lio izontally connecting said bracket and said spreader eleinents, the outer end ot said spii'ing; beine; connected to one ot' said elements in 'front oi" said stand ard and tbe inner end ot said spring beingY connected to tbe otber oi: said elements bel tween said standard and said outer spring` end and directly above tbe siiieader element pivot.

10. lin conibination, a base, a standard siip ported by said ba e, a bracket element vertically adjiistably associated with said standard above said base, a spreader element horizontally pivoted to said bracket element in front of said standard, and a horizontal coil spring,l connecting said elenients, the outer end ot said spring being ad.inst-ablyY connected to one oit said elements in 'trent ot said standard and the inner end of said spring being pivotally connected to the other oit said elements directly above tbe spreader element pivot.

11. ln combination, a standard,a bracket element vertically adjiistably associated with said standard, a spreader element horizontally pivoted to said bracket element in front of said standard, and a horizontal coil spring Connecting' mid elenieli, 51 Oui @wl Suid spring being zldjus'fably connected i( one 0i' 51AM Clements in i'ifonf, G'/ uuid smurf and 11h@ inno/if md @E said spring being )iv (smil): coizmccd im tim @their opi" said dem@ between smid, simidzu uid said outei' Spying und und dii' wily nim he spi'aziioi: clement pivot.

:wid bizidi eiemn; und having its opposi'e end secured to said smit vertically and. directly Divot, said Spring' being digiuni-Gil Qnin "fi'mig nuff (hc vertical liiz'iciifat pivul, tim@ zmly secured to one O said eleiiienis and having; is op #Sie and piuotaiiy secured 'jo ihe @Hier i 'a'eiiifzliy :md directly @fume ille iimfi'fmnm swat ei 'mnt pivot V 1 l' i muy Ymei-Qor, the Signature 01 ih@ iiiaentoi 1U n Lied hei'eto.

'D iifiifsicis. 

